Like a do over for my Mac purchase - glad this is possible

My Problem

128 GB was not enough once my company changed our document management policy. I wished I had bought the bigger SSD. Fortunately ifixit had the goods.

My Fix

Went well. Battery connector was different than in the video but it was pretty clear.

My Advice

Start by making a bootable USB drive, I used Diskmaker X. Then make sure you have a good time machine backup. It took an additional 2-3 hours to get the backup restored and everything updated to the latest minor version of OS X. Some software had to be registered again (MS Office), Goto meeting, etc.